Conductivity is a sum parameter of ionic concentration in a sample. The bigger the concentration of salt, acid or base is, the better the conductivity. The unit for conductivity is Siemens/m: S/m often also S/cm.
The range for aqueous solutions starts with ultra-pure water with a conductivity of 0.05 µS/cm at 25°C. Natural waters, such as drinking water and surface water, often show a range between 100 and 1000 µS/cm. At the upper range there are acids and bases with a conductivity of several hundreds of mS/cm. Conductivity is an electrochemical measurement. In the simplest case a conductivity cell consists of two similar electrodes with an alternating voltage in-between. The more ions that are dissolved in the sample the bigger the current between the electrodes. The conductivity meter uses Ohm’s law and the cell constant for calculating the specific conductivity.
In practice conductivity measurement is used for monitoring plants, quality control of ultra-pure water and determining salinity in sea water.
Portable IDS Multi-parameter instruments or meters for analog sensors have many things in common: Robust, waterproof and reliable.
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For each requirement the right meter. IDS multi-parameter benchtop meters or conductivity meters for analog conductivity cells
Tethered or usable with wireless modules: IDS conductivity cells can be used in many different applications. werde.
A wide range of conductivity cells for all applications from ultra-pure water to concentrated solutions.
Analog conductivity cell, ATEX, available incl. controller and isolated amplifier
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Measuring system for every wastewater treatment plant, for up to 20 parameter, including conductivity
Digital sensor for the IQ Sensor Net, e.g. to monitor the inlet of a wastewater treatment
To connect analog conductivity cells for wastewater and drinking water
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